School psychology, an independent field of psychology, aims at the development and provision of psychological services in the school environment. School psychology has a short history in Greece, but in the last few years educators and professionals have made considerable efforts towards the development of the discipline. The writers of this book, all of them academics, present the principles of School Psychology and discuss its role and contribution to the treatment of various problems that arise in the school environment and beyond. The book targets school psychologists, but also educators and professionals who are interested to learn about current advances in the field.